The maps in this series are all pretty solid. I really like that the maps have a security overlay png file, so that as a GM running on VT, I can put the security features on a separate layer that isn't visible to the players. My only complaint is that the grey maps (which have the most detail) are a little too dark and some of the gray tones are too similar, so objects don't really stand out. I think the creator of these maps should try for a bit more contrast in future products.